DOI: 10.1175/JCLI-D-12-00624.1
Scopus记录号: 2-s2.0-84883165185
论文题名: On the identification of the large-scale properties of tropical convection using cloud regimes
作者: Tan J. ; Jakob C. ; Lane T.P.
刊名: Journal of Climate
ISSN: 8948755
出版年: 2013
卷: 26, 期: 17 起始页码: 6591
结束页码: 6617
语种: 英语
Scopus关键词: Atmospheric properties
; Convective behavior
; Frequency distributions
; International satellite cloud climatology projects
; Satellite retrieval
; Stratocumulus clouds
; Tropical atmospheres
; Tropical convection
; Clouds
; Cluster analysis
; Tropical engineering
; atmospheric convection
; cloud cover
; cluster analysis
; convective cloud
; satellite data
; stratiform cloud
; stratocumulus
英文摘要: The use of cloud regimes in identifying tropical convection and the associated large-scale atmospheric properties is investigated. The regimes are derived by applying cluster analysis to satellite retrievals of daytime-averaged frequency distributions of cloud-top pressure and optical thickness within grids of 280km by 280km resolution from the International Satellite Cloud Climatology Project between 1983 and 2008. An investigation of atmospheric state variables as a function of cloud regime reveals that the regimes are useful indicators of the archetypal states of the tropical atmosphere ranging from a strongly convecting regime with large stratiform cloudiness to strongly suppressed conditions showing a large coverage with stratocumulus clouds. The convectively active regimes are shown to be moist and unstable with large-scale ascending motion, while convectively suppressed regimes are dry and stable with large-scale descending winds. Importantly, the cloud regimes also represent several transitional states. In particular, the cloud regime approach allows for the identification of the "building blocks" of tropical convection, namely, the regimes dominated by stratiform, deep, and congestus convection. The availability of the daily distribution of these building blocks for more than 20 years opens new avenues for the diagnosis of convective behavior as well as the evaluation of the representation of convection in global and regional models. © 2013 American Meteorological Society. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/51701
Appears in Collections: 气候变化事实与影响
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作者单位: ARC Centre of Excellence for Climate System Science, Monash University, Melbourne, Australia; School of Earth Science, ARC Centre of Excellence for Climate System Science, University of Melbourne, Melbourne, Australia
Recommended Citation:
Tan J.,Jakob C.,Lane T.P.. On the identification of the large-scale properties of tropical convection using cloud regimes[J]. Journal of Climate,2013-01-01,26(17)